Corrugated culvert.



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' CORRUGATED cULvEn'r.

Specification of Letters Patent.

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Application filed August 29, 1910. Serial No. 579,414.

m mam: --:-B it known that I, FERDINAND J. FELirr,

a citizen of the United States, residing at Peoria, in the county of Peoria and State of Illinois, have invented certain new and usefulImprovements in Corrugated Culverts;

andI do hereby declare. that the following is a full, clear, and exact-description of them- .ven tion, which will enable others "skilled in 1 .0

use thesame- V Y My invention relates to means for joining the art to whichit appertains to make and sheet metal corrugated culverts.

The object of my invention is to make a stable joint that will hold the-completely formal culvert in longitudinalalinement, so

that when thrown in the trench it need not begn'opped u during the filling in recess, an

also rein orce the joint against t e danger of saggi g under settling pressure of an embankment or road bed. v My invention lies in the manner of forming the terminal ends of meeting corrugations, and their'nnion to make up the com- I so the same. Fig. 7 is a lon plete joint.

Referring-to the drawings-Figure '1 is a;

side elevation, showing two joined sections. Fig. 2 is an end view of the same. Fig. 3 is -a longitudinal section through two joined sections. .Fig. 4.is a cross section onthe line as w of Fig. 3. Fig. 5 is a side elevation of broken culvert sections, showing the application of a 'clamp. Fig. 6 is'an end view of 'tudinal section of the same parts shown in ig. 5.

Each section is formed at the meeting ends of adjacent sections with flat bearing surfaces 4 and 5,. withanflin'tervening circumferential corrugation 6, and the flat bearing surfaces are provided in each meetmg part with meeting perforations. The sections are adapted tobe unitedby causing the 'specially formed terminal ends to be interengage'd at the timethe culvert is formed, or'the terminal 'culvert commercially desirable and very durable.

'tion'al clam lace to un te the culvert sections to ether. y meansof bolts and nuts in the usual way.

later w en desired for use, withthe flat bearioints being left open, to be joined ing face, lying in the longitudinal plane of theculvert, in contact relation, and with the corrugation 6, interlocking, then by applying rivets, bolt'sor the like, a substantial joint will beprovided that will not permit the. culvert to. sag when thrown m the trench, needing no propping, and will withstand great lateral pressure, rendering the v a, areclamp sections adapted to unite long sectionsjn the field, and are formed to'iembrace at least one of the terminal corrugations of each meeting section and are pro: vided with flanged plates, b, and the secis designed to, be secured in WhatIclaimis"' .1. In corrugated metal culvert sections,

means for uniting them, comprising match ing terminal portions of each formed-with perforated-flatbearing surfaces, and a circumfere'ntial corrugation, intervening between the fiat'surfaces, and rivets or the like for unitingthe parts substantially, as shown.

2. In corrugated metal culvert sections, means for unitingthem, comprising matchingterminal portions of each formed with perforated flat bearing surfaces, and a cir- I cumferential corrugation, intervening between theflat surfaces, and rivets or the like, for uniting the parts, and a sectional clamp for embracing the joint and adjacent terminal corrugations substantially, as shown.

In testimony whereof I aflix my signature. in presence of two witnesses.

FERDINAND FELDT.

- I Witnesses:

A. B. FINK, W. V. Tnrrr. 

